Dual path (low pressure loop and high pressure loop) EGR for improved air boosting efficiency

A method of providing exhaust gas recirculation (EGR) to an air-boosted internal combustion engine. The engine has both a high pressure EGR loop and a low pressure EGR loop. Each EGR loop has a valve that controls the amount of EGR that is delivered to the engine intake from that loop. During low-sp...

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Bibliographische Detailangaben
Hauptverfasser:	ALGER, II TERRENCE F, JOO SHINHYUK, CHADWELL CHRISTOPHER J
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING CALCULATING COMBUSTION ENGINES COMBUSTION ENGINES IN GENERAL COMPUTING COUNTING ELECTRIC DIGITAL DATA PROCESSING HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS INTERNAL-COMBUSTION PISTON ENGINES LIGHTING MECHANICAL ENGINEERING PHYSICS WEAPONS
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Beschreibung
Zusammenfassung:	A method of providing exhaust gas recirculation (EGR) to an air-boosted internal combustion engine. The engine has both a high pressure EGR loop and a low pressure EGR loop. Each EGR loop has a valve that controls the amount of EGR that is delivered to the engine intake from that loop. During low-speed engine conditions, more EGR is delivered to the engine intake from the low pressure EGR loop than from the high pressure EGR loop. During high-speed engine conditions, more EGR is delivered to the engine intake from the high pressure EGR loop than from the low pressure EGR loop.